HP 3000 Manuals

Compiler Library/XL Reference Manual

CCOS (or CCOS') 

CCOS calculates the cosine of a complex number.

Declaration 

Complex numbers in HP FORTRAN 77/XL programs are represented as an
ordered pair (a 2-element array) of real numbers:  one for the real part
a and one for the imaginary part b.  Thus, complex numbers occupy eight
bytes.

     TYPE complex=RECORD
                   realpart:REAL;
                   imagpart:REAL;
                  END;

     FUNCTION CCOS(VAR x:complex):complex; EXTERNAL;

Accuracy 

Depends on the accuracy of SIN, COS, and EXP.

Attributes 

Parameter:                A complex number.

Result:                   A complex number.

HP FORTRAN 77/XL:         Intrinsic function:  Y=CCOS(X).

Error:                    See the SIN, COS, and EXP error descriptions.

MPE/iX 5.0 Documentation